What is CVE-2021-41054?

CVE-2021-41054 is a high-severity vulnerability in Atftp Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-09-13.

How severe is CVE-2021-41054?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2021-41054 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Atftp Project

CVE-2021-41054

tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options.

Vulnerability class: Buffer Overflow

EPSS: 0.026 (83.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Atftp_project Atftp
Debian Debian_linux — versions 9.0
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-41054?: CVE-2021-41054 is a high-severity vulnerability in Atftp Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2021-09-13.
How severe is CVE-2021-41054?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-41054 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.